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Old 01-15-2013, 02:08 PM   #12
oldschoolrules
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Join Date: Aug 2012
Posts: 65
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I personally believe that it helps with both - correct positioning of the wrist/forearm and racquet head speed. Think about it this way - if you were to take the racquet straight up from ready position (no drop or extension of arm) to trophy the only way you should be able to do it smoothly is with the palm facing down. What taking it back with the palm down encourages (imho) is fewer "manipulations" of the forearm/wrist to get to a strong trophy position which, in turn, simplifies and "smooths out" the overall motion, leading to a more efficient and, thus, more powerful, swing.
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